Jebao Wireless - nRF24 Config

chrisc123 · Feb 4, 2021

Has anyone managed to reverse engineer how Jebao are using the nRF24 module that provides basic wireless sync in their various wavemaker pumps? Thinking of trying to build a little wifi bridge out of an esp32+nRF24 to give a bit more control.

Current plan is start with sniffing the spi traffic to the module and go from there but keen to know if anyone else has been down this road before?

Chris

Ron Reefman · Feb 6, 2021

BUMP

Wow! This post is crazy in that I don't understand about half of it. But then I'm sure not into tech. Good luck.

chrisc123 · Feb 6, 2021

Made a little bit of progress with this this afternoon but a bit confused with what I'm seeing at the moment.

Can see the SPI traffic and nRF dissector in Sigrok looks like it's working but then the CONFIG register showing being written as 0x0D makes me think something is fundamentally wrong in my setup (or understanding, more likely). Bit 1 set as 0 should mean the module is in POWER DOWN, but the module is clearly transmitting. Don't see any other CONFIG writes at all

First time using Sigrok and only have a cheap 24MHz Saleae clone - it's also been a *very* long time since I did anything down at register level - so all a bit of a learning curve right now.

Anyway, a bit of illustrative output below in case anyone else finds this stuff interesting.

Code:

nRF24L01(+): Commands: Cmd W_REGISTER: RX_ADDR_P0 = "0110104334"
nRF24L01(+): Commands: Cmd W_REGISTER: CONFIG = "0D"
nRF24L01(+): Commands: Cmd W_REGISTER: TX_ADDR = "0110104334"
nRF24L01(+): Commands: Cmd W_REGISTER: CONFIG = "0D"